The VisionBoard 2 offers a big advantage to people who find it painful or difficult to use a traditional keyboard by improving readability and reducing eyestrain with big 1-in/2.54-cm square keys and large, bold black-on-yellow letters and numbers. Users with low vision or functional limitations can increase and improve capabilities with greater comfort and control. The VisionBoard 2 also features two USB 2.0 side ports and function keys.